Mathew abt



M. ABT. VALVE (No Model.)

' Patented Aug. 3, 1897.

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ms z-rzns 0o. PNOTO-LITMO. wumnofnn. by c UNITED STATES PATENT OFFICE.

MATHEV ABT, OF NEV YClRK, N. Y.

SPECIFICATION forming part of Letters Patent No. 587,632, dated August3, 1897. Application filed March 2, 1897 Serial No. 625,737. (No model.)

. bonnet and engaging in tapped holes in a Be it known that I, MATHEW ABT, of New flange formed on the upper portion of the York city, in the county and State of New valve-casing, and to secure a tight joint be- 55 York, have invented a new and Improved tween the bonnet and casing Iemployagas- Valve, of which the following is a full, clear, hot 24 of rubber or similar packing material. and exact description. Arranged between an annular collar on Thisinvention relates particularly to valves the valve-stem 19 and the ring 17 is a sleeve for steam-heating radiators; and the object 26, and a similar sleeve2'7 is arranged 011 the is to provide a simple and effective means lower portion of the body 18 of the valve- Io whereby both the inlet and outlet valves may stem 19 between the ring 17 and the washer be simultaneously operated, thus obviating 28, which is held in place by means of a nut any possible danger that might arise from 29 engaging with the threaded portion at the leaving one valve open and the other closed. lower end of the stem portion 18. These I will describe a valve embodying my insleeves 26 and 27 engage tightly yet movably 5 vention, and then point out the novel feain the tubular extension 4 and form valvetures in the appended claims. closures for the slot-openings 20 and 21, thus Reference is to be had to the accompanying preventing the discharge of steam from one drawings, forminga part of this specification, chamber to the otherthrough said sl0t-open-. in which similar characters of reference indiings. The bonnet 22 isprovided with a re- 20 cate corresponding parts in' both views. cess 30 to allow for the upward movement of Figure 1 is a vertical section of a valve emthe valvestem. bodying my invention, and Fig. 2 is atrans- In operation it will be seen that by rotatverse section thereof. ing the handle 31 on the valvesten1 19 the Referring to the drawings, 1 designates a valves 13 and 1% may be raised to open the 25 valve-casing having two oha1nbers2 and 3, steamways ormay be closed onto their seats. separated by a tubular extension in the cen- It will be apparent that this valve is of ter of the casing 4. Leading into the chamvery simple construction, and therefore not ber 2 is a steam-inlet 5, having a valve-seat liable to get out of order, and as the valves 6, and leading from the chamber 3 is an outare simultaneously operated by asingle valve- ;0 let 7, having a valve-seat 8. From the chamstem there can be no danger of leaving one ber 2 the steam-inlet 9 extends to a connecvalve closed and the otheropen, which might tion with a radiator-pipe 10, and a returncause an explosion or leakage. The slots 20 v pipe 11 has a connection with the inlet 12 of and 21 will extend through the upper end of the chamber The several inlet and outlet the tubular extension 4, so that by removing 3 5 pipes will be connected to the valve-casing the screws screwing the bonnet to the casing by means of suitable couplings, as indicated the valves may be lifted from the casing, in the drawings. when desired.

Arranged to engage in the valve-seat (3 is Having thus described my invention, I a plug-valve 13, and a similar valve 14 is proclaim as new and desire to secure by Letters 40 vided for the valve-seat 8. These valves 13 Iatentand 14 are connected, respectively, to arms 1. A valve, comprising a casing having two 15 and 16, extended horizontally and then chambers, a tubular extension separating downward from a ring 17, within which the said chambers and having opposite slot-open- 5 lower end portion 18 of the valve-stem 19 may ings, a valve-stem, a ring surrounding said 45 rotate. The arms 15 and 16 project through valve-stem, arms extended from said ring,

vertical slots 20 and 21 in the opposite sides and valves carried by the arms and adapted of the tubular extension 4. The valve-stem for engagement with the valve-seats of inlet 19 has a screw-threaded portion engaging in and outlet openings, the lower portion of the we a tapped hole in a bonnet 22 on the valvevalve-stein serving as a valve or closure for 5o casing. I preferably secure the bonnet 22 to the slot-openings through the tubular extenthe valve-casing by means of screws 23, exsion, substantially as specified.

Y tended through openings near the edge of the To all whom it may concern.-

2. A valve, comprising a casing having two chambers, a tubular extension Within the casing separating said chambers, a bonnet on the casing, a screw-threaded "alve-stem extended through the valve and having an enlarged portion extended into the tubular extension, a ring on said enlarged portion, arms extended from the ring through slot-openings in the tubular extension, inlet and outlet controlled valves carried by said arms, and sleeves on the enlarged portion of the valvestem, forming closures for the slot-openings in the tubular extension substantially as specified.

3. A valve, comprising a casinghaving two chambers, a tubular extension within the easing separating the chambers, a valve-stem having an enlarged portion extended into the tubular extension, a ring on said enlarged BIATHEW ABT.

\V itnesses: I

JNQ. M. BITTER, 0. R. FERGUSON. 

